The Prehistoric Krabs is one of the small crabs that Patar eats with his stick in the episode "Ugh" The only words the Prehistoric Krabs say are "Money, haggle." It has the same exact characteristics as a normal crab. Patar loves to eat them, and in the episode has shown him eating them by burning them and eating them in one gulp. They are red color.
The Prehistoric Krabs are miniature and prehistoric versions of Mr. Krabs. The have the same eye shape as Mr. Krabs, and they have big meaty claws. They also only have one tooth on their bottom jaw that sticks up over their top lip. They are seen in the episode: Ugh. The Prehistoric Krabs dwell under rocks. They also think about money, much like the present Mr. Krabs.